WO2014181737A1 - 液圧回転装置 - Google Patents
液圧回転装置 Download PDFInfo
- Publication number
- WO2014181737A1 WO2014181737A1 PCT/JP2014/061949 JP2014061949W WO2014181737A1 WO 2014181737 A1 WO2014181737 A1 WO 2014181737A1 JP 2014061949 W JP2014061949 W JP 2014061949W WO 2014181737 A1 WO2014181737 A1 WO 2014181737A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- peripheral surface
- cylinder block
- housing
- hydraulic
- outer peripheral
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
- F03C1/06—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis
- F03C1/0636—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F03C1/0644—Component parts
- F03C1/0668—Swash or actuated plate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
- F03C1/06—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis
- F03C1/0636—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F03C1/0644—Component parts
- F03C1/0663—Casings, housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
- F04B1/124—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/128—Driving means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
- F04B1/2035—Cylinder barrels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
- F04B1/2064—Housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
- F04B1/2078—Swash plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2210/00—Working fluid
- F05B2210/10—Kind or type
- F05B2210/11—Kind or type liquid, i.e. incompressible
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S417/00—Pumps
Definitions
- the present invention relates to a hydraulic rotation device such as a hydraulic pump or a hydraulic motor used for construction machinery or industrial machinery, for example.
- the hydraulic pump includes a housing, a drive shaft, a cylinder block fixed to the drive shaft, a plurality of cylinder pistons fitted in the cylinder block, and a swash plate that supports the plurality of cylinder pistons. Yes.
- a projection is provided on the inner peripheral surface of the housing over substantially the entire length in the axial direction of the cylinder block, and this projection extends toward the inlet port of the cylinder block.
- the loss generated in the conventional hydraulic pump includes a volume loss due to leakage of hydraulic oil and a mechanical loss that is a loss in force transmission. Due to these losses, the mutual conversion efficiency between hydraulic energy and rotational energy by the pump has been reduced.
- the volume loss depends on the load (pressure) on the pump, and the loss increases as the pressure increases.
- the mechanical loss shows a substantially constant loss regardless of the load as shown in FIG. As described above, the mechanical loss is a loss particularly problematic in idle operation. It was not well known that stirring loss accounted for about half of this mechanical loss.
- the technology for improving the conversion efficiency has mainly been to reduce volume loss and friction loss among mechanical loss, and there has been no technology to actively reduce stirring loss.
- the conventional hydraulic pump when the cylinder block rotates, the hydraulic oil in the housing is agitated so as to flow along the rotation direction of the cylinder block. Colliding with the projecting portion extending in the direction, the stirring resistance of the hydraulic oil was large.
- the stirring loss could not be reduced, the mutual conversion efficiency between the hydraulic energy and the rotational energy could not be improved.
- the efficiency could not be improved in a low pressure region (idle) frequently used in construction machines such as excavators.
- the efficiency of the conventional pump which has improved the efficiency by reducing the volume loss has reached about 95%, and it has been difficult to improve further by extending the conventional technology.
- an object of the present invention is to provide a hydraulic rotating device capable of reducing the stirring loss and improving the conversion efficiency.
- the hydraulic rotation device of the present invention is A housing; A drive shaft rotatably attached to the housing; A cylinder block fixed to the drive shaft and having a plurality of cylinder bores arranged in the circumferential direction; A plurality of cylinder pistons fitted in the plurality of cylinder bores so as to freely advance and retract; A swash plate that supports the plurality of cylinder pistons by a surface tiltable with respect to the drive shaft; Stirring resistance reducing means for reducing the resistance of stirring of the liquid between the housing and the cylinder block due to the rotation of the cylinder block is provided.
- the stirring resistance reducing means reduces the resistance of stirring of the liquid between the housing and the cylinder block due to the rotation of the cylinder block.
- stirring loss can be reduced and the mutual conversion efficiency of hydraulic energy and rotational energy can be improved.
- it is effective in improving efficiency in a low pressure region (idle) frequently used in construction machines such as excavators.
- the stirring resistance reducing means is: An outer peripheral surface of the cylinder block;
- the clearance between the cylinder block and the outer peripheral surface of the cylinder block includes an inner peripheral surface of the housing having a predetermined amount so as to reduce the stirring resistance of the liquid.
- the gap between the outer peripheral surface of the cylinder block and the inner peripheral surface of the housing is a set amount that reduces the stirring resistance of the liquid. Stirring loss can be reduced.
- the stirring resistance reducing means is: An outer peripheral surface having a substantially circular cross section of the cylinder block; And an inner peripheral surface having a substantially circular shape in cross section of the housing.
- a substantially perfect circle includes a circle having a radius of 0.95 to 1.05, where the radius of the true circle is 1.
- the outer peripheral surface of the cylinder block and the inner peripheral surface of the housing are substantially circular in cross section, the flow of liquid due to the rotation of the cylinder block is made smooth.
- the stirring loss can be reduced with a simple configuration.
- the stirring resistance reducing means is: A cylindrical sleeve disposed between an outer peripheral surface of the cylinder block and an inner peripheral surface of the housing;
- the cylindrical sleeve is disposed between the outer peripheral surface of the cylinder block and the inner peripheral surface of the housing, for example, a slant is formed on the inner peripheral surface of the housing.
- the cylindrical sleeve can partition this space and the outer peripheral surface of the cylinder block.
- the flow of the liquid by rotation of a cylinder block becomes difficult to receive the influence of the liquid of this space, and can reduce stirring loss.
- the shape of the inner peripheral surface of the housing is not restricted, and the stirring loss can be reduced by the cylindrical sleeve.
- the stirring resistance reducing means is: A rectifying portion is provided on at least one of the outer peripheral surface of the cylinder block or the inner peripheral surface of the housing and extends along the circumferential direction of the cylinder block.
- the rectifying portion that extends along the circumferential direction of the cylinder block is provided on at least one of the outer peripheral surface of the cylinder block or the inner peripheral surface of the housing.
- the liquid flow caused by the rotation of the cylinder block can be forced into the flow along the circumferential direction of the cylinder block, and the disturbance of the liquid flow can be suppressed.
- the stirring resistance reducing means reduces the stirring resistance of the liquid between the housing and the cylinder block due to the rotation of the cylinder block. Conversion efficiency can be improved.
- FIG. 1 is a cross-sectional view showing a hydraulic motor as a hydraulic rotating device of the present invention.
- the hydraulic motor includes a housing 1, a drive shaft 3 rotatably attached to the housing 1 via a bearing 2, and a cylinder block 4 fixed to the drive shaft 3. .
- the cylinder block 4 has a plurality of cylinder bores 40 arranged in the circumferential direction.
- a plurality of cylinder pistons 5 are fitted in the plurality of cylinder bores 40 so as to freely advance and retract.
- the tip of the cylinder piston 5 is formed in a spherical shape and is connected to the shoe 6.
- the shoe 6 is supported by a swash plate 7 that is positioned relative to the housing 1.
- the swash plate 7 has a surface that can tilt with respect to the drive shaft 3, and the plurality of cylinder pistons 5 are supported by this surface.
- the swash plate 7 is tilted by the tilt control mechanism 8 and the tilt angle with respect to the drive shaft 3 is controlled.
- the tilt control mechanism 8 includes a first tilt piston 81 and a second tilt piston 82, and the first tilt piston 81 and the second tilt piston 82 sandwich the swash plate 7.
- the housing 1 is provided with a first main passage 11 and a second main passage 12 which are connected to the cylinder bore 40 and supply and discharge hydraulic fluid to and from the cylinder bore 40.
- a valve plate 9 is attached to the inner surface of the housing 1 so as to face the end surface of the cylinder block 4.
- the valve plate 9 has a circular arc-shaped first port 91 and second port 92, and the first port 91 and the second port 92 are formed symmetrically.
- a port 40a for supplying and discharging hydraulic oil to and from the inside of the cylinder bore 40 is formed at the bottom of each cylinder bore 40.
- the end face of the cylinder block 4 is in contact with the valve plate 9.
- the first main passage 11 of the housing 1, the first port 91 of the valve plate 9, and the port 40a of the predetermined cylinder bore 40 can communicate with each other.
- the second main passage 12 of the housing 1, the second port 92 of the valve plate 9, and the port 40 a of the predetermined cylinder bore 40 can communicate with each other.
- FIG. 2 is a simplified cross-sectional view orthogonal to the axis L of the cylinder block 4 of the housing 1 and the cylinder block 4. As shown in FIG. 2, the gap e between the outer peripheral surface 4a of the cylinder block 4 and the inner peripheral surface 1a of the housing 1 is a predetermined set amount.
- the housing 1 is filled with hydraulic oil, and when the cylinder block 4 rotates, the hydraulic oil in the housing 1 is agitated so as to flow along the rotation direction of the cylinder block 4.
- the set amount is determined in advance so as to reduce the resistance to stirring of the hydraulic oil.
- the outer peripheral surface 4a of the cylinder block 4 and the inner peripheral surface 1a of the housing 1 in which the gap e between the outer peripheral surface 4a is a set amount are the housing 1 and the cylinder block 4 due to the rotation of the cylinder block 4.
- the agitation resistance reduction means which reduces the agitation resistance of the hydraulic oil during the period.
- the set amount is, for example, 5% to 25% of the radius of the cylinder block 4. With this set amount, the agitating resistance of the hydraulic oil can be reduced without increasing the size of the housing 1. On the other hand, when the set amount is smaller than 5%, the gap e becomes small and the stirring resistance of the hydraulic oil becomes large. On the other hand, when the set amount is larger than 25%, the diameter of the inner peripheral surface 1a of the housing 1 becomes large, and the housing 1 becomes large.
- the inner peripheral surface 1 a of the housing 1 has a shape along the outer peripheral surface 4 a of the cylinder block 4.
- the outer peripheral surface 4a of the cylinder block 4 and the inner peripheral surface 1a of the housing 1 are substantially circular in cross section.
- the substantially perfect circle includes a circle having a radius of 0.95 to 1.05, where the radius of the true circle is 1.
- the outer peripheral surface 4a and the inner peripheral surface 1a having a substantially circular cross section are an example of the stirring resistance reducing means.
- the stirring resistance reducing means since the stirring resistance reducing means is provided, it is possible to reduce the stirring loss and improve the mutual conversion efficiency between the hydraulic energy and the rotational energy. In particular, it is effective in improving efficiency in a low pressure region (idle) frequently used in construction machines such as excavators.
- the gap e between the outer peripheral surface 4a of the cylinder block 4 and the inner peripheral surface 1a of the housing 1 is a set amount that reduces the agitation resistance of the hydraulic oil, so that the agitation loss is reduced with a simple configuration. it can.
- the outer peripheral surface 4a of the cylinder block 4 and the inner peripheral surface 1a of the housing 1 have a substantially circular cross section, the flow of hydraulic oil due to the rotation of the cylinder block 4 can be made smooth. The stirring loss can be reduced with a simple configuration.
- the inner peripheral surface 100a of the housing has an uneven shape. This is because, in order to ensure the strength of the housing, ribs are provided on the inner peripheral surface 100a and the thickness of the inner peripheral surface 100a is partially reduced in order to reduce the weight of the housing.
- the clearance between the inner peripheral surface of the housing and the outer peripheral surface of the cylinder block becomes a set amount, or the inner peripheral surface of the housing is traversed in the same manner as the outer peripheral surface of the cylinder block. It cannot be conceived at all to make a substantially circular shape.
- FIG. 3 is a sectional view showing a hydraulic motor according to a second embodiment of the present invention.
- the second embodiment is different from the first embodiment in the configuration of the stirring resistance reducing means. Only this different configuration will be described below.
- the same reference numerals as those in the first embodiment are the same as those in the first embodiment, and the description thereof is omitted.
- a cylindrical sleeve 20 is disposed between the outer peripheral surface 4 a of the cylinder block 4 and the inner peripheral surface 1 a of the housing 1.
- the cylindrical sleeve 20 is an example of a stirring resistance reducing unit.
- the cylindrical sleeve 20 is fixed to the housing 1.
- the cylindrical sleeve 20 has a shape along the outer peripheral surface 4 a of the cylinder block 4.
- the cylindrical sleeve 20 has a substantially circular shape in cross section.
- the substantially perfect circle includes a circle having a radius of 0.95 to 1.05, where the radius of the true circle is 1.
- a space 1 b communicating with the tilt control mechanism 8 is formed on the inner peripheral surface 1 a of the housing 1, but the cylindrical sleeve 20 may partition the space 1 b and the outer peripheral surface 4 a of the cylinder block 4. it can.
- the flow of the hydraulic oil by rotation of the cylinder block 4 becomes difficult to receive the influence of the hydraulic oil of this space 1b, and can reduce stirring loss.
- the shape of the inner peripheral surface 1a of the housing 1 may be an uneven shape, and the cylindrical sleeve 20 can reduce stirring loss without any restriction.
- FIG. 4 is a sectional view showing a hydraulic motor according to a third embodiment of the present invention.
- the third embodiment is different from the first embodiment in the configuration of the stirring resistance reducing means. Only this different configuration will be described below.
- the same reference numerals as those in the first embodiment have the same configurations as those in the first embodiment, and thus description thereof is omitted.
- a plurality (three in this embodiment) of rectifying units 30 are provided on the outer peripheral surface 4 a of the cylinder block 4.
- the rectifying unit 30 is an example of a stirring resistance reducing unit.
- the rectifying unit 30 extends along the circumferential direction of the cylinder block 4 and is formed in an annular shape.
- the plurality of rectifying units 30 are arranged at predetermined intervals in the axial direction of the cylinder block 4.
- the flow of the hydraulic oil due to the rotation of the cylinder block 4 can be forced to the flow along the circumferential direction of the cylinder block 4 by the rectifying unit 30, and the disturbance of the hydraulic oil flow can be suppressed.
- the present invention is not limited to the above-described embodiment.
- the feature points of the first to third embodiments may be variously combined. That is, two or more agitation resistance reducing units in the first to third embodiments may be combined in various ways.
- the gap between the outer peripheral surface of the cylinder block and the inner peripheral surface of the housing is set as a set amount, and the outer peripheral surface of the cylinder block and the inner peripheral surface of the housing are formed into a substantially circular shape in cross section.
- any one of the configurations may be adopted.
- the rectifying unit is provided on the outer peripheral surface of the cylinder block.
- the rectifying unit may be provided on at least one of the outer peripheral surface of the cylinder block and the inner peripheral surface of the housing.
- a configuration in which the gap between the outer peripheral surface of the cylinder block and the inner peripheral surface of the housing is a set amount (configuration of the first embodiment), and the outer peripheral surface of the cylinder block and the inner periphery of the housing At least one of a configuration in which the surface is substantially circular in cross section (configuration in the first embodiment) and a configuration in which a rectifying unit is provided (configuration in the third embodiment) may be added. .
- a configuration in which the gap between the outer peripheral surface of the cylinder block and the inner peripheral surface of the housing is a set amount (configuration of the first embodiment), and the outer peripheral surface of the cylinder block and the inner periphery of the housing At least one of a configuration in which the surface has a substantially circular cross section (configuration in the first embodiment) and a configuration in which a cylindrical sleeve is provided (configuration in the second embodiment) may be added. .
- the hydraulic rotating device of the present invention has been described as a hydraulic motor, but may be a hydraulic pump.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Reciprocating Pumps (AREA)
- Hydraulic Motors (AREA)
Abstract
Description
ハウジングと、
上記ハウジングに回転自在に取り付けられた駆動軸と、
上記駆動軸に固定されると共に、周方向に配列された複数のシリンダボアを有するシリンダブロックと、
上記複数のシリンダボアに進退自在に嵌め込まれた複数のシリンダピストンと、
上記駆動軸に対して傾動可能な面によって上記複数のシリンダピストンを支持する斜板と、
上記シリンダブロックの回転による上記ハウジングと上記シリンダブロックとの間の液体の撹拌の抵抗を低減する撹拌抵抗低減手段と
を備えることを特徴としている。
上記撹拌抵抗低減手段は、
上記シリンダブロックの外周面と、
上記シリンダブロックの外周面との間の隙間が液体の撹拌抵抗を低減するように予め定められた設定量である上記ハウジングの内周面と
を含む。
上記撹拌抵抗低減手段は、
上記シリンダブロックの横断面略真円形状の外周面と、
上記ハウジングの横断面略真円形状の内周面と
を含む。
上記撹拌抵抗低減手段は、
上記シリンダブロックの外周面と上記ハウジングの内周面との間に配置された円筒スリーブを含む。
上記撹拌抵抗低減手段は、
上記シリンダブロックの外周面または上記ハウジングの内周面の少なくとも一方に設けられると共に上記シリンダブロックの周方向に沿って延在する整流部を含む。
図1は、この発明の液圧回転装置としての油圧モータを示す断面図である。図1に示すように、この油圧モータは、ハウジング1と、このハウジング1に軸受2を介して回転自在に取り付けられた駆動軸3と、この駆動軸3に固定されたシリンダブロック4とを備える。
図3は、この発明の第2実施形態の油圧モータを示す断面図である。この第2の実施形態は、上記第1の実施形態とは、撹拌抵抗低減手段の構成が相違する。この相違する構成のみを以下に説明する。なお、この第2の実施形態において、上記第1の実施形態と同一の符号は、上記第1の実施形態と同じ構成であるため、その説明を省略する。
図4は、この発明の第3実施形態の油圧モータを示す断面図である。この第3の実施形態は、上記第1の実施形態とは、撹拌抵抗低減手段の構成が相違する。この相違する構成のみを以下に説明する。なお、この第3の実施形態において、上記第1の実施形態と同一の符号は、上記第1の実施形態と同じ構成であるため、その説明を省略する。
1a 内周面
1b 空間
3 駆動軸
4 シリンダブロック
4a 外周面
5 シリンダピストン
7 斜板
8 傾転制御機構
9 バルブプレート
20 円筒スリーブ
30 整流部
40 シリンダボア
e 隙間
Claims (5)
- ハウジングと、
上記ハウジングに回転自在に取り付けられた駆動軸と、
上記駆動軸に固定されると共に、周方向に配列された複数のシリンダボアを有するシリンダブロックと、
上記複数のシリンダボアに進退自在に嵌め込まれた複数のシリンダピストンと、
上記駆動軸に対して傾動可能な面によって上記複数のシリンダピストンを支持する斜板と、
上記シリンダブロックの回転による上記ハウジングと上記シリンダブロックとの間の液体の撹拌の抵抗を低減する撹拌抵抗低減手段と
を備えることを特徴とする液圧回転装置。 - 請求項1に記載の液圧回転装置において、
上記撹拌抵抗低減手段は、
上記シリンダブロックの外周面と、
上記シリンダブロックの外周面との間の隙間が液体の撹拌抵抗を低減するように予め定められた設定量である上記ハウジングの内周面と
を含むことを特徴とする液圧回転装置。 - 請求項1または2に記載の液圧回転装置において、
上記撹拌抵抗低減手段は、
上記シリンダブロックの横断面略真円形状の外周面と、
上記ハウジングの横断面略真円形状の内周面と
を含むことを特徴とする液圧回転装置。 - 請求項1から3の何れか一つに記載の液圧回転装置において、
上記撹拌抵抗低減手段は、
上記シリンダブロックの外周面と上記ハウジングの内周面との間に配置された円筒スリーブを含むことを特徴とする液圧回転装置。 - 請求項1から4の何れか一つに記載の液圧回転装置において、
上記撹拌抵抗低減手段は、
上記シリンダブロックの外周面または上記ハウジングの内周面の少なくとも一方に設けられると共に上記シリンダブロックの周方向に沿って延在する整流部を含むことを特徴とする液圧回転装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/767,367 US20150377209A1 (en) | 2013-05-07 | 2014-04-30 | Hydraulic rotary apparatus |
EP14794015.9A EP2995814A1 (en) | 2013-05-07 | 2014-04-30 | Hydraulic rotary device |
KR1020157003249A KR20150036437A (ko) | 2013-05-07 | 2014-04-30 | 액압 회전 장치 |
CN201480002506.4A CN104662292A (zh) | 2013-05-07 | 2014-04-30 | 液压旋转装置 |
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JP2013-097666 | 2013-05-07 | ||
JP2013097666A JP2014218919A (ja) | 2013-05-07 | 2013-05-07 | 液圧回転装置 |
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WO2014181737A1 true WO2014181737A1 (ja) | 2014-11-13 |
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PCT/JP2014/061949 WO2014181737A1 (ja) | 2013-05-07 | 2014-04-30 | 液圧回転装置 |
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US (1) | US20150377209A1 (ja) |
EP (1) | EP2995814A1 (ja) |
JP (1) | JP2014218919A (ja) |
KR (1) | KR20150036437A (ja) |
CN (1) | CN104662292A (ja) |
WO (1) | WO2014181737A1 (ja) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59145377A (ja) * | 1983-02-07 | 1984-08-20 | Hitachi Ltd | サ−ボ・ポンプ |
JPH109119A (ja) | 1996-06-28 | 1998-01-13 | Komatsu Ltd | アキシャルピストンポンプ |
EP1225331A2 (de) * | 2001-01-23 | 2002-07-24 | Brueninghaus Hydromatik Gmbh | Zylindertrommel für hydrostatische Axialkolbenmaschinen |
JP2009174332A (ja) * | 2008-01-22 | 2009-08-06 | Caterpillar Japan Ltd | 液圧回転装置 |
DE102011109998A1 (de) * | 2011-08-11 | 2013-02-14 | Linde Material Handling Gmbh | Axialkolbenmaschine in Schrägscheibenbauweise mit einem längsbewegliche Abschirmlamellen aufweisenden Zylinderblock |
DE102011053652A1 (de) * | 2011-09-15 | 2013-03-21 | Linde Material Handling Gmbh | Axialkolbenmaschine mit eine Gehäuseauskleidung |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19990021863U (ko) * | 1999-01-21 | 1999-06-25 | 추수욱 | 유압펌프의탄성슈홀더 |
JP2001107843A (ja) * | 1999-10-12 | 2001-04-17 | Aida Eng Ltd | 可変ピストンポンプ・モータ |
JP5183225B2 (ja) * | 2008-01-28 | 2013-04-17 | 株式会社小松製作所 | 油圧ポンプ・モータ及びファン駆動装置 |
CN201679661U (zh) * | 2010-03-12 | 2010-12-22 | 北京华德液压工业集团有限责任公司 | 对称式静压支撑摆盘柱塞泵 |
-
2013
- 2013-05-07 JP JP2013097666A patent/JP2014218919A/ja active Pending
-
2014
- 2014-04-30 EP EP14794015.9A patent/EP2995814A1/en not_active Withdrawn
- 2014-04-30 CN CN201480002506.4A patent/CN104662292A/zh active Pending
- 2014-04-30 WO PCT/JP2014/061949 patent/WO2014181737A1/ja active Application Filing
- 2014-04-30 US US14/767,367 patent/US20150377209A1/en not_active Abandoned
- 2014-04-30 KR KR1020157003249A patent/KR20150036437A/ko not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59145377A (ja) * | 1983-02-07 | 1984-08-20 | Hitachi Ltd | サ−ボ・ポンプ |
JPH109119A (ja) | 1996-06-28 | 1998-01-13 | Komatsu Ltd | アキシャルピストンポンプ |
EP1225331A2 (de) * | 2001-01-23 | 2002-07-24 | Brueninghaus Hydromatik Gmbh | Zylindertrommel für hydrostatische Axialkolbenmaschinen |
JP2009174332A (ja) * | 2008-01-22 | 2009-08-06 | Caterpillar Japan Ltd | 液圧回転装置 |
DE102011109998A1 (de) * | 2011-08-11 | 2013-02-14 | Linde Material Handling Gmbh | Axialkolbenmaschine in Schrägscheibenbauweise mit einem längsbewegliche Abschirmlamellen aufweisenden Zylinderblock |
DE102011053652A1 (de) * | 2011-09-15 | 2013-03-21 | Linde Material Handling Gmbh | Axialkolbenmaschine mit eine Gehäuseauskleidung |
Also Published As
Publication number | Publication date |
---|---|
EP2995814A1 (en) | 2016-03-16 |
CN104662292A (zh) | 2015-05-27 |
US20150377209A1 (en) | 2015-12-31 |
KR20150036437A (ko) | 2015-04-07 |
JP2014218919A (ja) | 2014-11-20 |
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